Up for sale is one new old stock VP Components Varial Mountain Bike Adjustable Headset. Allows you to adjust the headset 3 Degrees on the trail. Goes form -1.5 up to +1.5 degrees. 7 positions. Fits 49.7mm headset openings only and use with straight 1 1/8" fork steertubes only. Adjust by loosening you stem and top cap and the 2 clamp screws on the headset. There are a few instructional youtube videos for it from VP. I received this in a bike part buy out and it appears to have every piece EXCEPT for a "dial switch" which looks like it just makes it slightly easier for you to dial the degree changes in. You can still adjust it without that switch. Also comes with a black stem cap and silver bolt ( not pictured )